1324821740 has 72 divisors (see below), whose sum is σ = 3219100080. Its totient is φ = 456382080.

The previous prime is 1324821697. The next prime is 1324821763. The reversal of 1324821740 is 471284231.

It is a junction number, because it is equal to n+sod(n) for n = 1324821697 and 1324821706.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31574 + ... + 60386.

Almost surely, 2^1324821740 is an apocalyptic number.

1324821740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1324821740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1609550040).

1324821740 is an abundant number, since it is smaller than the sum of its proper divisors (1894278340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1324821740 is a wasteful number, since it uses less digits than its factorization.

1324821740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28863 (or 28850 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 1324821740 is about 36398.1007746283. The cubic root of 1324821740 is about 1098.2953597296.

The spelling of 1324821740 in words is "one billion, three hundred twenty-four million, eight hundred twenty-one thousand, seven hundred forty".